Home / 15,511.11-21,412.58-9,925.35

Finding the Fourth Proportional to 15,511.11, 21,412.58 and 9,925.35

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Solution

The fourth proportional to 15,511.11, 21,412.58 and 9,925.35 is: 13,701.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.11 : 21,412.58 = 9,925.35 : x
  2. Step 2: Convert to fraction form
    15,511.11/21,412.58 = 9,925.35/x
  3. Step 3: Cross multiply
    15,511.11x = 21,412.58 × 9,925.35
  4. Step 4: Simplify right side
    15,511.11x = 212,527,350.90
  5. Step 5: Solve for x
    x = 212,527,350.90/15,511.11
  6. Step 6: Final answer
    x = 13,701.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.